TE Size	Neck (inch)	Chest (inch)	Weight (pound)
0	7 ~ 9	11 ~ 13	2 ~ 3.5
1	9 ~ 10	13 ~ 15	4 ~ 6
2	10 ~ 13	15 ~ 17	6 ~ 9
3	13 ~ 15	17 ~ 19	9 ~ 12
4	15 ~ 17	19 ~ 23	13 ~ 18
5	17 ~ 19	23 ~ 27	*
6	19 ~ 21	27 ~ 31	*
7	21 ~ 23	31 ~ 36	*
8	23 ~ 26	36 ~ 40	*

* Sizes vary greatly among big dog breeds. Please measure your dog by neck and chest size.